It's always a treat to see your plants @nikv.
You have quite the touch for rare succulents.
I find the Crassula columnaris really unique and cool looking. Also cool is how they don't flower until the end of the life cycle, so the utmost care is necessary to ensure they get there. Yours look super healthy so I'm sure you're going to see them flower.
Thank you! I feel blessed to live in the same country these plants originate in so keeping them is easy